Curtain control device

Abstract

A curtain control device has a stroke setting device and a damper respectively assembled at both ends of a curtain spindle rod. A torsion element is further assembled on the curtain spindle rod. A curtain spindle sleeve is invaginated on the outside of the curtain spindle rod, the stroke setting device and the damper. The curtain spindle sleeve is assembled with the combination of the curtain spindle rod and the damper, and then a curtain fabric is assembled on the outside of the curtain spindle sleeve. In this manner, the opening range of the curtain fabric roll is controlled by the stoke setting device, and the roll-up speed of each part of the curtain fabric is slowed down by the damper so as to reduce effectively the noise produced by the quick actuation of each part and the defective rate.

What is claimed is: 
     
       1. A curtain control device, comprising:
 a stroke setting device ( 1 ), having a major body ( 11 ), a guiding groove ( 114 ) disposed along axial direction being provided on the inner wall of a hollow portion ( 113 ) of said major body ( 11 ); a rotor ( 12 ) being mounted within said hollow portion ( 113 ) of said major body ( 11 ); a first and a second grooves ( 121 ), ( 122 ) opposite to each other being provided on two end edges and encircling the peripheral wall of said rotor ( 12 ); two connection grooves ( 123 ) separated with each other being provided between said first and said second grooves ( 121 ), ( 122 ) for the communication therebetween, one of said two connection grooves ( 123 ) having an engagement recess ( 124 ) depressed downward; and a ball ( 13 ), which may be located in said first, said second and said connection grooves ( 121 ), ( 122 ), ( 123 ), and said ball ( 13 ) being provided in said guiding groove ( 114 ) of said major body ( 11 ) of said stroke setting device ( 1 ); 
 a damper ( 2 ), having a damper main body ( 21 ) which is formed with an accommodation portion ( 211 ) on its one end; a support shaft ( 22 ) being provided in said accommodation portion ( 211 ); damping material ( 25 ) being provided between said support shaft ( 22 ) and said damper main body ( 21 ); an end cap ( 23 ) being attached to a place on said damper main body ( 21 ) corresponding to the opening of said accommodation portion ( 211 ); a through hole ( 231 ) being provided at the center of said end cap ( 23 ) for the penetration out of a rod body ( 223 ) of said support shaft ( 22 ); further, a combination member ( 24 ) being assembled at the other end of said end cap ( 23 ) opposite to the end attached to said damper main body ( 21 ); 
 a curtain spindle rod ( 3 ), which is provided between said stroke setting device ( 1 ) and said damper ( 2 ), having one end thereof assembled with said major body ( 11 ) of said stroke setting device ( 1 ), and the other end with said rod body ( 223 ) of said support shaft ( 22 ) of the damper ( 2 ); a combination member ( 31 ) being attached to said curtain spindle rod ( 3 ); and a torsion element ( 32 ) being also assembled on said curtain spindle rod ( 3 ); and 
 a curtain spindle sleeve ( 4 ), having a hollow bore ( 41 ) for housing said stroke setting device ( 1 ), said damper ( 2 ) and said curtain spindle rod ( 3 ); said combination members ( 24 ), ( 31 ) of said damper ( 2 ) and said curtain spindle rod ( 3 ) being assembled with said curtain spindle sleeve ( 4 ); 
 wherein said first groove ( 121 ) provided on one end edge of said rotor ( 12 ) of said stoke setting device ( 1 ) has the middle segment thereof to be formed as a curved segment ( 1211 ) facing towards the inside of said rotor ( 12 ); 
 wherein one of said two connection grooves ( 123 ) of said rotor ( 12 ) is made to be connected to the joint of said first groove ( 121 ) and said curved segment ( 1211 ); 
 wherein said stroke setting device ( 1 ) is further formed with a turning segment ( 1221 ) on said second groove ( 122 ) of said rotor ( 12 ), and the other connection groove ( 123 ) is connected to said first groove ( 121 ) through said turning segment ( 1221 ) of said second groove ( 122 ); and 
 wherein said damper ( 2 ) further has a trough portion and an invagination portion mating with each other, for accommodating damping material ( 25 ) therein, provided between said support shaft ( 22 ) and said accommodation portion ( 211 ) of said damper main body ( 21 ). 
 
     
     
       2. The curtain control device as claimed in  claim 1 , wherein said stroke setting device ( 1 ) is further formed with a turning segment ( 1221 ) on said second groove ( 122 ) of said rotor ( 12 ), and the other connection groove ( 123 ) is connected to said first groove ( 121 ) through said turning segment ( 1221 ) of said second groove ( 122 ). 
     
     
       3. The curtain control device as claimed in  claim 1 , wherein said damper ( 2 ) and the curtain spindle rod ( 3 ) have female snap-fit portions ( 241 ), ( 311 ) respectively provided on the peripheral edges of said combination member ( 24 ), ( 31 ) thereof, and a male snap-fit portion ( 42 ) for engaging with said female snap-fit portions ( 241 ), ( 311 ) is provided on the inner wall of said hollow bore ( 41 ). 
     
     
       4. The curtain control device as claimed in  claim 1 , wherein said major body ( 11 ) of said stroke setting device ( 1 ) is a structure having a closed end ( 111 ) at one end, an opened end ( 112 ) at the other end, and a hollow portion ( 113 ) in its interior; an assembly portion ( 115 ) being provided on said closed end ( 111 ) of said major body ( 11 ) of said stroke setting device ( 1 ); two joint sections ( 125 ) being respectively formed on the ends of said rotor ( 12 ) so as to correspond to said opened end ( 112 ) and said assembly portion ( 115 ) of said closed end ( 111 ). 
     
     
       5. The curtain control device as claimed in  claim 1 , wherein said damper ( 2 ) further has a trough portion and an invagination portion mating with each other, for accommodating damping material ( 25 ) therein, provided between said support shaft ( 22 ) and said accommodation portion ( 211 ) of said damper main body ( 21 ). 
     
     
       6. The curtain control device as claimed in  claim 1 , wherein a plurality of perforation ( 224 ) is further provided on the end face of said support shaft ( 22 ), having projection of said rod body ( 223 ) therewith, for supplying damping material ( 25 ) to flow between said end cap ( 23 ) and said rod body ( 223 ) of said support shaft ( 22 ). 
     
     
       7. A curtain control device, comprising:
 a stroke setting device ( 1 ), having a major body ( 11 ), a guiding groove ( 114 ) disposed along axial direction being provided on the inner wall of a hollow portion ( 113 ) of said major body ( 11 ); a rotor ( 12 ) being mounted within said hollow portion ( 113 ) of said major body ( 11 ); a first and a second grooves ( 121 ), ( 122 ) opposite to each other being provided on two end edges and encircling the peripheral wall of said rotor ( 12 ); two connection grooves ( 123 ) separated with each other being provided between said first and said second grooves ( 121 ), ( 122 ) for the communication therebetween, one of said two connection grooves ( 123 ) having an engagement recess ( 124 ) depressed downward; and a ball ( 13 ), which may be located in said first, said second and said connection grooves ( 121 ), ( 122 ), ( 123 ), and said ball ( 13 ) being provided in said guiding groove ( 114 ) of said major body ( 11 ) of said stroke setting device ( 1 ); 
 a damper ( 2 ), having a damper main body ( 21 ) which is formed with an accommodation portion ( 211 ) on its one end; a support shaft ( 22 ) being provided in said accommodation portion ( 211 ); damping material ( 25 ) being provided between said support shaft ( 22 ) and said damper main body ( 21 ); an end cap ( 23 ) being attached to a place on said damper main body ( 21 ) corresponding to the opening of said accommodation portion ( 211 ); a through hole ( 231 ) being provided at the center of said end cap ( 23 ) for the penetration out of a rod body ( 223 ) of said support shaft ( 22 ); further, a combination member ( 24 ) being assembled at the other end of said end cap ( 23 ) opposite to the end attached to said damper main body ( 21 ); said damper ( 2 ) further having a trough portion and an invagination portion mating with each other, for accommodating damping material ( 25 ) therein, provided between said support shaft ( 22 ) and said accommodation portion ( 211 ) of said damper main body ( 21 ); 
 a curtain spindle rod ( 3 ), which is provided between said stroke setting device ( 1 ) and said damper ( 2 ), having one end thereof assembled with said major body ( 11 ) of said stroke setting device ( 1 ), and the other end with said rod body ( 223 ) of said support shaft ( 22 ) of the damper ( 2 ); a combination member ( 31 ) being attached to said curtain spindle rod ( 3 ); and a torsion element ( 32 ) being also assembled on said curtain spindle rod ( 3 ); and 
 a curtain spindle sleeve ( 4 ), having a hollow bore ( 41 ) for housing said stroke setting device ( 1 ), said damper ( 2 ) and said curtain spindle rod ( 3 ); said combination members ( 24 ), ( 31 ) of said damper ( 2 ) and said curtain spindle rod ( 3 ) being assembled with said curtain spindle sleeve ( 4 ). 
 
     
     
       8. A curtain control device, comprising:
 a stroke setting device ( 1 ), having a major body ( 11 ), a guiding groove ( 114 ) disposed along axial direction being provided on the inner wall of a hollow portion ( 113 ) of said major body ( 11 ); a rotor ( 12 ) being mounted within said hollow portion ( 113 ) of said major body ( 11 ); a first and a second grooves ( 121 ), ( 122 ) opposite to each other being provided on two end edges and encircling the peripheral wall of said rotor ( 12 ); two connection grooves ( 123 ) separated with each other being provided between said first and said second grooves ( 121 ), ( 122 ) for the communication therebetween, one of said two connection grooves ( 123 ) having an engagement recess ( 124 ) depressed downward; and a ball ( 13 ), which may be located in said first, said second and said connection grooves ( 121 ), ( 122 ), ( 123 ), and said ball ( 13 ) being provided in said guiding groove ( 114 ) of said major body ( 11 ) of said stroke setting device ( 1 ); 
 a damper ( 2 ), having a damper main body ( 21 ) which is formed with an accommodation portion ( 211 ) on its one end; a support shaft ( 22 ) being provided in said accommodation portion ( 211 ); damping material ( 25 ) being provided between said support shaft ( 22 ) and said damper main body ( 21 ); an end cap ( 23 ) being attached to a place on said damper main body ( 21 ) corresponding to the opening of said accommodation portion ( 211 ); a through hole ( 231 ) being provided at the center of said end cap ( 23 ) for the penetration out of a rod body ( 223 ) of said support shaft ( 22 ); further, a combination member ( 24 ) being assembled at the other end of said end cap ( 23 ) opposite to the end attached to said damper main body ( 21 ); 
 a curtain spindle rod ( 3 ), which is provided between said stroke setting device ( 1 ) and said damper ( 2 ), having one end thereof assembled with said major body ( 11 ) of said stroke setting device ( 1 ), and the other end with said rod body ( 223 ) of said support shaft ( 22 ) of the damper ( 2 ); a combination member ( 31 ) being attached to said curtain spindle rod ( 3 ); and a torsion element ( 32 ) being also assembled on said curtain spindle rod ( 3 ); and 
 a curtain spindle sleeve ( 4 ), having a hollow bore ( 41 ) for housing said stroke setting device ( 1 ), said damper ( 2 ) and said curtain spindle rod ( 3 ); said combination members ( 24 ), ( 31 ) of said damper ( 2 ) and said curtain spindle rod ( 3 ) being assembled with said curtain spindle sleeve ( 4 ); 
 wherein a plurality of perforation ( 224 ) is further provided on the end face of said support shaft ( 22 ), having projection of said rod body ( 223 ) therewith, for supplying damping material ( 25 ) to flow between said end cap ( 23 ) and said rod body ( 223 ) of said support shaft ( 22 ).